Here is the full list of all 45 Children of Morta achievements. It takes around 25-30 hours to unlock all of the achievements on Windows.
Upgrade 75 times in the workshop.
Find 10 secrets.
Upgrade The Book of Rea 15 times.
Defeat OU.
Unlock all family traits.
Bring back 15 souvenirs from the dungeons.
Kill 250 ferocious enemies.
Complete 10 challenge rooms.
Reunite the automata.
Find 20 journals.
Have 20000 Morv.
Free Anai-Sarava.
Find 10 divine items in a single dungeon.
Kill a boss without receiving damage.
Unlock all family traits of a Bergson.
Free the blackmarketeer.
Construct Ben's wine machine.
Complete 10 in-run events.
Resolve 20 puzzle events.
Bring Hope into the world.
Have 3 runes equipped simultaneously.
Free Anai-Raha.
Upgrade 25 times in the workshop.
Shelter the stargazer.
Free the runemender.
Rescue Mary.
Kill 100 enemies using hazards.
Upgrade The Book of Rea 5 times.
Kill a boss with every playable character.
Unlock all playable characters.
Free Anai-Dya.
Use 5 charms in the same dungeon run.
Kill 5000 enemies.
Complete 5 in-run events.
Save the wolf cub.
Unlock a family trait of three different Bergsons.
Kill 50 ferocious enemies.
Upgrade 10 times in the workshop.
Gain each obelisk effect at least once.
Finish a dungeon in co-op mode.
Defeat the Spider King.
Revive 5 times in co-op mode.
Unlock a family trait.
Free the shopkeeper.
Investigate the shrine of Rea.